Выполните действия:
1) 8/27 *9/7 : 4/7;
3) 2 2/3 : 24/35 : 27/9;
5) 15/16 : 5/8 * 1 1/9;
7) 4 9/38 * 5/23 : 7/19
Помогите буду благодарна
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